There is also some interesting interspecies communication where two different monkey species recognize the others alarm calls for crowned eagles leopards, two of their main predators.
I remember reading about a field biologist who was taking a trail back to camp and could hear bird and monkey alarm calls for jaguars (I believe this was central/south America). At some point they realized that the calls were following them and realized that they were being tracked by the jaguar. Alas, I can’t find the reference to this.
